This 4ft T8 LED Tube has one side power, a rotary head, an opal (frosted) diffuser and a cover made from Polycarbonate (PC). Featuring an SMD2835 light source by Epistar combined with high quality components, this LED Tube has a 130lm/W efficiency. It can be connected directly to the mains easily and safely, eliminating the residual consumption of ballasts and starters. It lasts longer, requires less maintenance and provides instant, full light with no flickering. It makes no noises and is shock resistant. The 85V-265V AC Multi-Voltage refers to peaks and drops. The tubes cannot continuously function at these voltages. *Includes an LED starter. *Installation not recommended in closed luminaires. *T8 LED Tube Installation Guide